SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


Select all months bewtween two dates


Select all months bewtween two dates

Author
Message
twin.devil
twin.devil
SSCrazy
SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)

Group: General Forum Members
Points: 2381 Visits: 2674
feroz_tt (4/16/2014)
Hi All,

I'm getting some problem here

;with Numbers (Number) as
(select row_number() over (order by object_id)
from sys.all_objects)
select dateadd(month, number, '2014-09-01')
from Numbers
where number <= datediff(month, '2014-09-01', '2016-03-31')

Low no of months.

Select datediff(month, '2014-09-01', '2016-03-31')
it should give 31 instead of 18.

I don't understand where i'm wrongUnsure


How did you calculate 31?
Jeff Moden
Jeff Moden
SSC Guru
SSC Guru (86K reputation)SSC Guru (86K reputation)SSC Guru (86K reputation)SSC Guru (86K reputation)SSC Guru (86K reputation)SSC Guru (86K reputation)SSC Guru (86K reputation)SSC Guru (86K reputation)

Group: General Forum Members
Points: 86887 Visits: 41104
feroz_tt (4/16/2014)
Hi All,

I'm getting some problem here

;with Numbers (Number) as
(select row_number() over (order by object_id)
from sys.all_objects)
select dateadd(month, number, '2014-09-01')
from Numbers
where number <= datediff(month, '2014-09-01', '2016-03-31')

Low no of months.

Select datediff(month, '2014-09-01', '2016-03-31')
it should give 31 instead of 18.

I don't understand where i'm wrongUnsure


I'm not sure why you think there should be "31". I can understand why someone would insist that the correct answer is "19" but not "31".

with Numbers (Number) as
(select row_number() over (order by object_id) -1
from sys.all_objects)
select Number+1,dateadd(month, number, '2014-09-01')
from Numbers
where number <= datediff(month, '2014-09-01', '2016-03-31')
;




Results:

                     
-------------------- -----------------------
1 2014-09-01 00:00:00.000
2 2014-10-01 00:00:00.000
3 2014-11-01 00:00:00.000
4 2014-12-01 00:00:00.000
5 2015-01-01 00:00:00.000
6 2015-02-01 00:00:00.000
7 2015-03-01 00:00:00.000
8 2015-04-01 00:00:00.000
9 2015-05-01 00:00:00.000
10 2015-06-01 00:00:00.000
11 2015-07-01 00:00:00.000
12 2015-08-01 00:00:00.000
13 2015-09-01 00:00:00.000
14 2015-10-01 00:00:00.000
15 2015-11-01 00:00:00.000
16 2015-12-01 00:00:00.000
17 2016-01-01 00:00:00.000
18 2016-02-01 00:00:00.000
19 2016-03-01 00:00:00.000

(19 row(s) affected)



--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum

































































































































































SQLServerCentral


Search